What Is a Batch Manufacturing Record?

What is a batch manufacturing record, and what does a complete one contain?

A batch manufacturing record is the completed, signed document that proves how one specific batch of a product was actually made. This guide gives you the plain definition, the required contents, a worked batch manufacturing record example, the yield and reconciliation math regulators check, what each jurisdiction actually calls the record, and how the concept maps onto cannabis production.

What Is a Batch Manufacturing Record?

A batch manufacturing record (BMR) is the completed, signed document that captures exactly how one specific batch of a product was made. In United States regulation it is defined as “an accurate reproduction of the appropriate master production or control record, checked for accuracy, dated, and signed,” together with “documentation that each significant step in the manufacture, processing, packing, or holding of the batch was accomplished” (21 CFR 211.188). In plain terms, the master record says how a product should be made; the batch manufacturing record proves it was.

The record is the executed history of a single batch: components and their real weights, equipment used, in-process checks, yields, deviations, and the signatures of everyone who performed or checked each step.

What Is the Difference Between a BMR and a Master Batch Record?

The master batch record (MBR) is the approved template for how a product should be made; the batch manufacturing record is the executed copy, filled in with what actually happened during one specific batch. The master is written once and reused; a new batch manufacturing record is completed each time you run the process.

In the United States, the master production and control record must be “prepared, dated, and signed (full signature, handwritten) by one person and independently checked, dated, and signed by a second person” (21 CFR 211.186). The EU equivalent is the approved Manufacturing Formula and Processing Instructions (EudraLex Volume 4, Chapter 4, sections 4.17 and 4.18).

For the full comparison, including where an electronic batch record fits, see our sibling guide on master batch record vs batch production record.

What Must a Batch Manufacturing Record Contain?

A complete batch manufacturing record must document, at minimum, the batch’s identity, every component and its actual weight, the equipment and lines used, each processing step and its in-process checks, the yield, any deviations, and the signatures of those who performed and checked each step. US regulation is the most prescriptive: 21 CFR 211.188(b) lists thirteen items every batch manufacturing record must document.

1. Dates
2. Identity of individual major equipment and lines used
3. Specific identification of each batch of component or in-process material used
4. Weights and measures of components used in the course of processing
5. In-process and laboratory control results
6. Inspection of the packaging and labelling area before and after use
7. A statement of the actual yield and a statement of the percentage of theoretical yield at appropriate phases of processing
8. Complete labelling control records, including specimens or copies of all labelling used
9. Description of drug product containers and closures
10. Any sampling performed
11. Identification of the persons performing and directly supervising or checking each significant step
12. Any investigation made according to section 211.192
13. Results of examinations made in accordance with section 211.134

The EU and WHO frameworks require the same essentials in their own wording. The table below groups them into six buckets so you can see the three regulators line up.

The EU adds a separate Batch Packaging Record (section 4.21), and WHO mirrors it, so packaging is documented in its own record rather than the processing record.

Batch Manufacturing Record Example (An Annotated Walkthrough)

Here is what a filled-in batch manufacturing record example looks like across those six buckets. Few competing pages show a populated one, so the table below walks through it, annotated with the regulatory item each field satisfies. The numbers are illustrative, not a real record.

Read one row end to end. The weighing row records the material identity, the exact quantity dispensed against the theoretical target, the balance used, the operator, the checker, and the timestamps, satisfying four separate items in the FDA list.

Yield and Reconciliation: The Math Regulators Check

Regulators check two numbers in every batch manufacturing record: the percentage of theoretical yield, and a material reconciliation that accounts for everything issued against everything obtained, used, destroyed, or returned. Both are simple arithmetic, but they decide whether a batch passes review or triggers an investigation.

Percentage of theoretical yield = (actual yield / theoretical yield) x 100. The batch record must state “the actual yield and a statement of the percentage of theoretical yield at appropriate phases of processing” (21 CFR 211.188(b)(7)). Using the worked example above: 9,650 / 10,000 x 100 = 96.5%. The master record sets the maximum and minimum percentages “beyond which investigation according to section 211.192 is required” (21 CFR 211.186(b)(7)). With an acceptable range of 95.0% to 100.5%, our 96.5% passes and no investigation is triggered.

Material reconciliation = issued minus (used + destroyed + returned), compared against obtained. EU GMP requires reconciling “the quantities and reference number or identification of all printed packaging materials and bulk product issued, used, destroyed or returned to stock and the quantities of obtained product, in order to provide for an adequate reconciliation” (EudraLex Ch. 4, section 4.21(h)). If 10,000 labels are issued, 9,650 are applied, 300 are destroyed, and 50 are returned to stock, then 10,000 minus (9,650 + 300 + 50) = 0. The reconciliation balances. A yield outside the limit or a reconciliation that fails to balance is exactly what forces a documented deviation and investigation.

How Deviations and CAPAs Live in the Batch Record

A complete batch manufacturing record does not only log the steps that went right. It must capture every deviation, the investigation, and any corrective action, all signed and tied to the batch before release. EU GMP requires “notes on special problems including details, with signed authorisation for any deviation from the Manufacturing Formula and Processing Instructions” (section 4.20(h)), WHO requires the same signed authorization (section 15.27(j)), and the FDA record must document “any investigation made according to section 211.192” (211.188(b)(12)).

This is where the plumbing behind the record matters. In a typical stack, quality records live in a separate system, whether a standalone eQMS, a spreadsheet, or paper, and must be reconciled against the batch record at review time. Because GrowerIQ’s QMS is built into the same system, deviation reports, CAPAs, and sensor readings land in the batch record automatically. The question worth asking of any setup: count the systems you must open to trace a single deviation at release time.

GrowerIQ Digital MBR

Your BMR, compiled while the batch runs

GrowerIQ captures weights, equipment, in-process checks, deviations, and yields as work happens, so the batch record compiles itself instead of being transcribed after the fact.

SEE EBR SOFTWARE

What Do Regulators Actually Call It? (FDA vs EU vs WHO)

“Batch manufacturing record” is industry shorthand. The regulations use different names: the FDA calls it the “batch production and control record” (21 CFR 211.188), while EU GMP and WHO both call it the “batch processing record” (EudraLex Ch. 4, section 4.20; WHO TRS 986, section 15.25). The EU also keeps a separate “Batch Packaging Record” (section 4.21). “BMR” and “manufacturing batch record” are shorthand from the FDA sphere and vendor practice.

Worth carrying forward: WHO section 15.25 recommends “copying or validated computer programs” and states that transcribing from approved documents “should be avoided,” a nudge toward system-generated records.

How Batch Records Work in Cannabis Manufacturing

Health Canada does not mandate a document called a “batch manufacturing record.” It regulates cannabis production through Good Production Practices and standard operating procedures, and the BMR concept maps onto the lot or batch record a producer keeps to prove those procedures were followed. Under the Cannabis Regulations (SOR/2018-144, Part 5), the general Good Production Practices requirement sits at section 79, and section 80 requires that cannabis “must be produced, packaged, labelled, distributed, stored, sampled and tested in accordance with standard operating procedures.”

“Lot or batch” is a defined term, and the lot or batch number threads through the records so a producer can trace any unit back to how it was made. Retention differs from the pharma frameworks: a licence holder’s SOP and sanitation documentation must be kept at least two years per version (section 232), against the EU’s one-year-past-expiry or five-year-past-certification rule. For what a complete cannabis lot record must contain, see our cannabis batch record template.

From Paper to Electronic Batch Records

Paper batch manufacturing records slow every release. They invite transcription errors, illegible entries, and manual yield tallies, and cannot be reviewed until someone physically collates the pages. That is why manufacturers are moving to electronic batch records that capture data as work happens. WHO GMP says as much in section 15.25: validated computer programs are recommended, and transcribing from approved documents should be avoided.

This is the bridge GrowerIQ’s Digital Master Batch Record is built for: it compiles the batch manufacturing record automatically from live production data, so weights, equipment, in-process checks, operators, deviations, and yields are captured as work is done rather than re-keyed afterward. The percentage-of-theoretical-yield calculation (211.188(b)(7)) and the material reconciliation (EU section 4.21(h)) are computed live instead of hand-tallied at review. For how electronic records work, read our electronic batch record guide, and for the cannabis-specific contents you can download our free cannabis batch record guide.

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Last updated: July 2026

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